Light-shield.



W. N. MGCOMB.

LIGHT SHIELD.

APPLICATION FILED NOV. 22, 1910.

1,050,967, Patented 5311.21, 1913.

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WILLIAM NELSON MGCOMB, 0F NE'W YORK, IT.

LI GH'I SHIELD.

Specification. of Letters Patent.

Patented Jan. 2t, 1913.

Application filed November 22, 1910. Serial No. 593,604.

To all whom it may concern:

Be it known that I, WILLIAM N. MGCOMB, a citizen of the United States, and a resident of the borough of Manhattan, New York city, in the county of New York and State of New York, have invented certain new and useful Improvements in Light- Shields, of which the following is a specification. My invention relates to improvements in light shields, generally, and in particular to shields for incandescent lamps.

A great many colored lamps are in use at the present time in electric signs and other places. The color effect for these lamps is usually obtained either by making the lamps of colored glass orby coating the lamps with a coloring solution. lloth these methods are objectionablecolorcd glass lamps are too expensive, and the coloring; matter, due to the expansion and contraction of the lamps, as well as the'action of the weather, usually fades, and soon wears olt'. Still another method has been used to some extent this is shown in Patent. No. 79mm. and consists of a glass cap tilted ovcr the end of the lamp and held in place by sprin arms engaging the body of the lamp. Even this method is opcn to many serious objecti0nsthe glass caps are expensive to make and as they are cxtrcmcly trail. the hrcaking loss is considerable; brass is the only material so far l'ound practicablc tor the springarms aml under the heating action of the lamp the sprin arms soon losc thcir resiliency, permitting the caps to bccomc loosened and linally discngagcd l'rom the lamp.

It is the object of my invcnlion lo ovcrconic these \aii'iHlls objections and this l do by attaching a color sliicld lo the lamp by mechanical means in such a way that it cannot bccomo loosened or accidcnlally dctachcd from the lamp.

Anothcr l'caturc ol improvcmcnt consists in making the cap of a chcapcr and lcss breakable material than glass, such as pyro lin.

in its prcl'crrcd l'orm the invcntion consisls ot' a color shicld, which is sccurcd in place upon the lamp by mcans oi' a mcmber titted over the opposilc cnd ollhc lamp than that to which the shicld is applicd. thc said mcmbcr bcing ol lcss diamclcr than the greatest diamclcr of thc lamp, and a mcans,

In the drawings: Figure l is a side ele 'ation of the invention in its simplest form, as applied to a lamp bulb, certain of the parts being lJl'Uhtll away and shown in Section. Fig. 2 is a liltc view of a slightly diflcrcnt l'orm oi the invcnlion in which th shield cntircly illt'ltlrtxs' thc'lamp. Figs. 3 and l illustrate dilll rent ways of securing thc shield in place.

Like rclcrencc characters refer to like parts throughout the scvcral views.

My improvcd light: shicld may, and prefi crably docs consist of a close fitting cap 1, which. as shown in Figs. l to l. is engaged on the end of the lamp bulb 52. This cap may, it. desircd. be made of glass or similar transparent or translucent material. For this purposc. howcvciul prcter to use a cheaper and more durable material such as pyrolin. An inliuilc varicty of colors may be obtained in this material and a cap made of this material possesses a degree of resiliency and flexibility which is desirable. The cap is prcl crably made of a slightly lcss diameter than thc greatest.diameter of thc lamp so as to closely hug the cnd'of the lamp. 'll-e cap is preferably secured in place by being attached to a member which is titled ovcr lhc smallcr end of the lamp and is will diamclcr less than the greatest diametcr ol thc lamp to prctcnt its slipping over the head of the lamp. This member may be either in the form of a collar 3, as illustintcd in Figs. 1, 5. and l or if it is dcsircd to shield thc cnlir" globe, this mom-- bcr may bc in the shape ot a jacket "l', inclosing the smaller cud ol the globe. as in Fig. 2. Various means of connection between the cap and thc securing member may be employed. lrclcrably, however, these two parts arc secured togl'cthcr .byxmcans of a of connection between the member and the head i-on one of the parts, which interlocks figures. Thus in the forms shown in Figs,

over the smaller or inner end of the lamp,

1 and 2 the cap would be applied to the end of the lamp, and the collar or the jacket, as the case may he, would then he slipped and by bringing the flange on the one part over the bead on the other part, the meeting edges would interlock to secure the cap in place. The annular securing member may be made of the same material. as the cap, or, if found desirable, this securing member could be made of fiberoid, metal or other material.

As the lamp globes sometimes vary in size, an adjustable connection may sometimes be found desirable. This may be attained, as in Fig. 3, by providing openings 7 in the marginal portions of the collar or jacket, as the case may be, through which a wire 8 or other securing medium is passed. In this the cap may be connected by lacing to the collar or jacket. This method would be of advantage where the end portions of old burnt out colored globes are used as the caps. Another form of a "justable connection between the cap and the annular securing member is illustrated in F 4i. In this case one of the parts is provided with a lug or pin 9 which is received in an in clined slot 10 in the other part. lhe inclination of'this slot permits of the desired degree of adjustment between the two parts.

What is claimed, is:

1. A color cap adapted to closely fit the end of an incandescent lamp, and means for securing said cap in place, comprising a member fitted over the smaller end of the lamp, said member being of less diameter than the greatest diameter of the lamp, and a means of connection bet-ween said member and the cap.

7 2., A. color cap adapted to closely fit theend oi" an incandescent lamp, and means for securing said cap in place comprising a collar of lesser diameter than the greatest diameter oi? the lamp, fitted over the smaller end. of the lamp, and connection betweeh said collar and the cap.

' spades? 3. A color ca adapted to closely fit the end of an incan escent lamp, and a member fitted over the smaller end of the lamp, said member being of lesser diameter than the greatest diameter of the lamp and said memher and the cap having interlocking parts.

e. A color cap adapted to closely fit the end of an incandescent lamp, and a member fitted over the smaller end of the lamp, said member being of lesser diameter than the greatest diameter of the lamp and said member and the cap having interlocking parts one of which parts is adapted to be yieldingly sprung over the other so as to maintain the parts interlocked.

5. A color cap adapted to fit, the end of an incandescent lamp, and means for securingsaid cap in place comprising a collar applied to the smaller end of the lamp and of a diameter less than the greatest diameter of the lamp, the said member and the cap having interlocking parts, one of which is adapted to be expanded toengage over the other.

6. The combination with an incandescent lamp ot a divided shell, the parts of which are adapted to be fitted over the opposite ends of-the lamp, the meeting edges of the parts making interlocking engagement. so as to secure the shell in place.

'Z. A covering for incandescent lamps comprising a shell divided into two parts, which parts are designed to be fitted over theopposite ends of the lamp, and means carried by the meeting edges of the parts for securing said parts together.

8. A light shield for incandescent lamps comprising a collar applied to the lamp bulb onone side of the greatest diameter thereof, said collar being of a lesser diameter than the greatest diameter of the lamp, and a color cap applied to the lamp on the opposite side of the greatest diameter and having connection with the said collar.

Signed at New York cit-y in the county of New York and State of New York this 19th day of November A. D. 1910.

WILLIAM NELSON MOCOMBQ Witnesses LAURA E. SMITH,

AXEL V. BEEKEN. 

